"Million eyeballs" argument was always kinda meh.

Maybe but still a little better than closed source like Windows. Everytime whem someone asked me if I could hack my way into his Windows PC I always told "After all it's Windows, how bad can it be?" Doing that since 25 years still waiting for a Windows machine that doesn't open... On the other hand I failed to open about 50% of Apple Devices I was asked to open and about 10% of Linux machines. (Not because Linux is insecure by itself but because most Linux distros install with insecure defaults and users don't care.)